My wife and kids really want chickens. I think it would be fun as well, but I would want the chickens running around during the day, like they do at my brothers in Oregon. I really don't want our grass and planting beds destroyed though. What is enough free range space to prevent chickens from beating it up badly? We live in SF east bay suburbia, and have a landscaped fenced in yard that is about 75ft deep and 150ft wide. About a third is grass, a third is gardening/wine grapes, and a third is unstructured paths/planting beds. I figure I'd build a coop w/ auto door/water, and let the chickens out in the am, and close the door in the evening.